_INSPECTION - C1981022 ‎(37)‎

• Permit No: C1981022
• IBM Index Class Name: INSPECTION
• Doc Name: Inspection Report
• Inspection Date: 1/24/2008
• Media Type: D
• Archive: No

Elk Creek C-1981-022
24 January 2008
pg 2/3 czr�;I�
Hydrologic Balance (cont.): - Pond C is a concrete dam below the West Valley Fill. The dam appeared
to be stable at the time of the inspection. The pond contained a small amount of water but was not
discharging at the time of the inspection.
- Pond D contained water approximately two feet below the top of the primary discharge pipe and
was not discharging at the time of the inspection. The pond embankment was covered with snow but
appeared to be well vegetated and stable at the time of the inspection. No erosional problems were
noted on the pond embankment. This pond was drained and cleaned in late summer.
- The East Yard Pond has been cleaned of material placed there from the pond cleaning
(approximately half of the pond area was covered to a depth of approximately two feet). This
material was removed from the pond and hauled to the West Valley fill. The pond was dry at the
time of the inspection. The pond appeared to be stable at the time of the inspection. No erosional
problems were noted on the pond at the time of the inspection.
- Pond E is a concrete dam below the II-West Valley Fill. The concrete embankment was stable at
the time of the inspection. The pond contained a small pool of water at the time of the inspection
but was not discharging.
- Pond F contained a small amount of water (and was frozen) but was not discharging at the time of
the inspection. The pond embankment was covered with snow but appeared to be well vegetated and
stable at the time of the inspection. There were no erosional problems noted on the pond
embankment.
- The ditches along the haul road to the Elk Creek facilities area appeared to be stable and
functioning as designed. No erosional problems were noted in any of the ditches.
Backfilling and Grading: - The backfilled Sanborn Creek portal was covered with snow but remains
stable. There are no signs of settling or cracking at the backfilled portal location. No erosional
problems were noted at the portal location at the time of the inspection. The portal area had
minimal vegetation over the summer and fall months but, as stated, there have been no erosional
problems.
Explosives: - The explosives magazines were in place just below Pond D and the elevated conveyor
from Elk Creek portals to the coal stockpile at the time of the inspection. The small pad where the
magazines are located was stable and in good condition at the time of the inspection. No erosional
problems were noted on the explosives magazine pad at the time of the inspection.
Processing Waste: - The West Valley Fill was well maintained and stable at the time of the
inspection. There was no water pooling on the pile. The operator hauled most of the pond
cleaning material from the East Yard Pond to the pile. This material still needs to be spread.
OMLLC is reminded that the maximum lift height for spreading and compacting is two feet. There is
approximately 10 vertical feet left on the pile, based on the operator's recent survey and the survey
stakes that have been placed in the ground. The operator plans to use the West Valley Fill during
the winter months and the II-West refuse pile during the summer months. This will extend the life
of the West Valley Fill. The reclaimed outslopes of the pile were all well vegetated and stable. No
erosional problems were noted on the outslopes at the time of the inspection.